a.

1. （兩個）交替的，輪流的
   According to the weather forecast, there will be a week of alternate rain and sunshine.

   根據天氣預報，下禮拜時雨時晴。

2. 間隔的
   They saw each other on alternate Sundays.

   他們每隔一個星期天相會一次。

3. 供選擇的；供替換的[B]

n.

1. 【美】代理人；代替者；候補者[C]
   We have several alternates on our team.

   我隊有幾名替補隊員。

vt.

1. 使交替，使輪流[（+with）]
   Our boss alternates kindness with severity.

   我們的老板時而和藹，時而嚴厲。

vi.

1. 交替，輪流[（+with/between）]
   For the next few days he alternated between hope and fear.

   其後幾天中他時而滿懷希望，時而充滿恐懼。

v.

adj.

1. every other.
   ▸(of two things) each following and succeeded by the other in a regular pattern.
   ▸Botany  (of leaves or shoots) placed alternately on the two sides of the stem.
2. chiefly N. Amer. another term for alternative.

n.